| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 5 |
| 4 | 10 |
| 5 | 10 |
| 6 | 5 |
| 7 | 31 |
| 8 | 230 |
| 9 | 755 |
| 10 | 1440 |
| 11 | 1760 |
| 12 | 1430 |
| 13 | 770 |
| 14 | 260 |
| 15 | 45 |
| 16 | 6721 |
| 17 | 60655 |
| 18 | 250665 |
| 19 | 628535 |
| 20 | 1067865 |
| 21 | 1299570 |
| 22 | 1166945 |
| 23 | 783720 |
| 24 | 393855 |
| 25 | 146025 |
| 26 | 38500 |
| 27 | 6630 |
| 28 | 585 |
| 29 | 5850271 |
| 30 | 59885980 |
| 31 | 285597890 |
| 32 | 843288660 |
| 33 | 1727996845 |
| 34 | 2610132070 |
| 35 | 3012643620 |
[1,1,5,10,10,5,31,230,755,1440,1760,1430,770,260, 45,6721,60655,250665,628535,1067865,1299570, 1166945,783720,393855,146025,38500,6630,585, 5850271,59885980,285597890,843288660,1727996845, 2610132070,3012643620] |